On Wed, 8 Jul 2015 09:11:35 +0000 (UTC), Adrian wrote:

I'm open to suggestions of other ways to get internet in the whole
property.

Cat5e cable. Works, reliable, fast (up to 1 Gbps full duplex).

That lazy don't like it as it takes time and some mental effort to
plan/research the routes and physical effort to install.

Internal soil stacks make nice cable routes from loft to floor slab,
upstairs rooms can be fed from the loft, 10 mm clip on cover conduit
in the corner behind the door to bring the cable down to skirting
level. One of the larger mouldings of ogee skirting hides the cable
well fixed with a cable staples rather than hammer in clips.

The stone walls here prevent WiFi getting far but a cheap AP(*) on
the end of a bit of Cat5 sorts that out.

(*) Aldi reduced to £14.00 Maginon "WLAN-Repeater" WLR-510. Plug in
device, 2.4 GHz and 5 GHz, three modes Access Point, Repeater, or
Client.
802.11 a/b/g/n WPA WPA2 two aerials but I don't think that means
MIMO, just one for 2.4 GHz and one for 5 GHz.

Or Tesco have the TP-Link TL-WR841N for £20 table/wall device. Bit
overkill as its also a router with a WAN and 4 LAN ports but that
does give your better control of what a given client can access and
when. The four LAN ports mean you could connect, via Cat5, three
other devices to it that then share the single Cat5 back to another
switch/server/WHY.
It is also a twin aerial MIMO device so performs better than a single
aerial AP. 802.11 b/g/n 2.4 GHz only.

--
Cheers
Dave.